Improvement in steam-generators



EDWIN SHEPPARROF PHILADELPHIA, PENNSYLVANIA.

Let-ters Patent No. 97,237, (lated November 23, 1869.`

IMPROVEMENT IN STEAM-GENERATORS.

The VSchedule referred to in these Letters Patent and making part of the same.

To alt whom it may concern Be it known that I, EDWIIvr SHIPARD, OI'IhiIadelphia, Pennsylvania, have invented an Improved Steam-Boiler; and I do hereby declare the following to be a full., clear, and exact description ofthe same.

My improved steam-generator is composed of' 'a number of' sections, each of which consists ott-wo or more pipes or chambers, connected together by large and small tubes, arranged substantially as described hereafter, so as to' insure a free circulation et' water in theboiler.

In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation, reference being had to the accompanying drawing, which forms a part ot' this specification, and in which- Figure 1 is a side .vi e\v ot' my improved steamboiler;

Figure., avertical section, on the line 1-2, fitr. l

Figure 3, a sectional plan, on the liuc 3 4, ng. .i and Figure 4 represents a modification of the boiler, drawn to a redueed,scale.

Similar letters refer to similar parts throughoutthe several views.

Ihe body or main portion of the boiler, as seen in figs.' 1, 2, and 3,-is composed of anumber oi'scetions, A, (three only heilig shown in the prese-nt i| 1sta nce,) and each section consists of longitudinal chambers or pipes, a', a', and c, situated vone above. the other, and at a suitable distance apart, closed at cach end, and connected together by vertical tubes b and b', the peculiar arrangement ot which constitutes lan especial feature of my invention.

As seen `in-tig. 1, tubes b, of large diameter, and smaller tubes b', are arranged alternately, iirst a large tube and then two smallc'r tubes, and this is continued throughout the series. By this arrangement a rapid witnesses.

`a discharge-pipe, I". i

It is not essential, in carrying out my invention, that each section should have three horizontal pipes c, as in boilers ot' large capacity there may be agreater number ot' these pipes, while in smaller boilers each section niay consist oi' but two horizontal pipes, with connecting vertical tubes, as shown in iig. 41 N or is it absolutely necessary that the precise arrangement of vertical tubes, illustratedin figs. l, 2, and 3, should be maintained, for there may he two or three sets of smaller tubes between those of larger diameter. (See iig. 4.) V

'Ihc boiler may he mounted within brick walls F I1", (shown by red lilies, iig. 1,) above a suitable furnace,

but different modes ot' mounting may be employed without depart-ing from my invention.

I claim as my invention, and desire to secure by Letters Iatent- 4 'Ihe horizontal pipes orehamhcrs a, connect-ed by large tubes-b and small tribes, b', arranged substantially` as described.

In. testimonywhereof, I have signed my name to this specification, in the presence of two subscribing' EDWI SHEPIARD.

Witnesses: [A 

